EURAMET is the Regional Metrology Organisation (RMO) of Europe. They coordinate the cooperation of National Metrology Institutes (NMI) in Europe in fields such as research in metrology, traceability of measurements to the SI units, international recognition of national measurement standards and related Calibration and Measurement Capabilities (CMC).

Through Knowledge Transfer and cooperation among members EURAMET facilitates the development of the national metrology infrastructures. EURAMET is responsible for the elaboration and execution of the European Metrology Research Programme (EMRP) and the European Metrology Programme for Innovation and Research (EMPIR) which is designed to encourage collaboration between European National Metrology Institutes (NMIs) and partners in industry or academia. The SI-Hg project is part of the EMPIR program.